The Fermi Paradox – Where Are All The Aliens?

 

 

http://www.quora.com/What-are-some-theories-on-why-we-arent-visited-by-aliens-yet

 

http://io9.com/5970501/the-great-filter-theory-suggests-humans-have-already-conquered-the-threat-of-extinction

 

http://listverse.com/2014/09/30/10-reasons-that-we-still-havent-found-aliens/

 

http://io9.com/11-of-the-weirdest-solutions-to-the-fermi-paradox-456850746

 

http://skepchick.org/2012/01/where-are-all-the-aliens/

 

http://praxtime.com/2013/02/03/so-where-are-all-the-aliens/

 

http://www.cracked.com/article_20216_5-insane-theories-about-why-we-havent-discovered-alien-life.html